Method for storing methane using a halogenating agent treated activated carbon
AssigneeUCAR Carbon Technology Corporation
InventorsRonald A. Greinke, Richard I. Bretz, Joseph T. Mullhaupt
Life of this patent
Estimating the term…
Abstract
A halogenated or sulfonated active carbon which has a high storage capacity for methane is provided from selected halogens in elemental form or solutions of such halogens or from solutions of sulfuric acid, fuming sulfuric acid, sulfur trioxide.
Claims4
A method for methane storage which comprises treating an activated carbon having micropores and macropores capable of storing methane with a halogenating agent selected from the group consisting of elemental chlorine, bromine and iodine and solutions containing chlorates, chlorites, bromates, boromites and iodates to provide a solid reaction product, washing said product with water, drying said washed product and heating said dried product at a temperature of about 400.degree. C. for about one hour to form a treated activated carbon with a loading of from 0.01% to about 4% of a material selected from the group consisting of chlorine, bromine and iodine and having an increased methane loading capability and an increased surface area, as compared to said untreated activated carbon;
- and loading said treated activated carbon with methane.
Dependencies are inferred from the claim text.